61298089 has 2 divisors, whose sum is σ = 61298090. Its totient is φ = 61298088.

The previous prime is 61298087. The next prime is 61298117. The reversal of 61298089 is 98089216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 23843689 = 6120^2 + 4883^2 .

It is a cyclic number.

It is not a de Polignac number, because 61298089 - 2¹ = 61298087 is a prime.

Together with 61298087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61298087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30649044 + 30649045.

It is an arithmetic number, because the mean of its divisors is an integer number (30649045).

Almost surely, 2^61298089 is an apocalyptic number.

It is an amenable number.

61298089 is a deficient number, since it is larger than the sum of its proper divisors (1).

61298089 is an equidigital number, since it uses as much as digits as its factorization.

61298089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 61298089 is about 7829.3096119645. The cubic root of 61298089 is about 394.2898933292.

The spelling of 61298089 in words is "sixty-one million, two hundred ninety-eight thousand, eighty-nine".